| 项目编号: | 1745111
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| 项目名称: | RAPID: Historical contingency in ecology and restoration: environmental change, year effects, and priority effects in California grasslands |
| 作者: | Truman Young
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| 承担单位: | University of California-Davis
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| 批准年: | 2017
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| 开始日期: | 2017-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | 25217
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | priority effect
; four-year drought
; many year
; plant
; california grassland
; dramatic change
; long-term
; local restoration project
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| 英文摘要: | This project explores how climate variation affects species in California grasslands. It builds on a long-term experiment in which different plants were planted in different plots, then monitored for many years. A four-year drought provided an unexpectedly strong test of how those plants respond to extreme stress. In the winter and spring of 2017, the drought suddenly ended; rainfall returned to normal levels. This dramatic change in conditions is a rare event and will likely have a strong influence on the types of plants that still live in the plots. Funding provided by this award will allow scientists to continue the experiment for at least another year to measure that influence. Understanding how cycles of rainfall influence plants is important for management of grasslands in light of possible long-term shifts in weather.
This is a short-term continuation of a long-term project that, unfortunately, expired just as the drought was ending. The experiment extended by this award tests two opposing models of how natural communities develop after disturbance. One theory predicts that community composition will tend to return to the pre-disturbance state, regardless of the vagaries of early establishment. The other theory predicts that community composition is largely determined priority effects (i.e., the order in which species colonize after disturbance). The study will assess how an unexpectedly large disturbance in water availability affects the outcome of community assembly processes. In addition to providing training for students in research, the investigator will assist in local restoration projects. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89965
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Truman Young. RAPID: Historical contingency in ecology and restoration: environmental change, year effects, and priority effects in California grasslands. 2017-01-01.
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